This paper describes a computer aided approach to the study of the longitudinal dynamics of a braked train. The numerical simulation of the phenomena takes into account the delay between the braking action of the cars and the fact that the values of the braking force of each wagon is reached gradually, in certain time after the braking command. The values of the time interval elapsed between th...

This paper addresses the problem of navigating in a provably safe manner a mobile robot with a limited fieldof-view placed in a unknown dynamic environment. In such a situation, absolute motion safety (in the sense that no collision will ever take place whatever happens in the environment) is impossible to guarantee in general. It is therefore settled for a weaker level of motion safety dubbed ...

The reliability of the braking system of moving walks plays a major role in the safe exploitation of these people movers. According to the requirements of the new standard ISO 22201-2, the reliability of a braking system of a moving walk has to correspond to safety integrity levels SIL1 till SIL3. In order to determine the required safety integrity level, a reliability analysis of a braking sys...

Since the advantage of hidden Markov model in dealing with time series data and for the sake of identifying driving style, three driving style (aggressive, moderate and mild) are modeled reasonably through hidden Markov model based on driver braking characteristics to achieve efficient driving style. Firstly, braking impulse and the maximum braking unit area of vacuum booster within a certain t...

Aiming at the main brake force distribution by using the proportional distribution and the braking force of eddy current retarder with shift, it affected the attachment of wheels on the ground. Through the establishment of vehicle dynamics, relationship of sliding rate with braking force and the eddy current retarder braking dynamics model, the controlled method was researched by relative value...

Cooperative braking with regenerative braking and mechanical braking plays an important role in electric vehicles for energy-saving control. Based on the parallel and the series cooperative braking models, a combined model with a predictive control strategy to get a better cooperative braking performance is presented. The balance problem between the maximum regenerative energy recovery efficien...

The adoption of electric vehicles promises numerous benefits for modern society. At the same time, there remain significant hurdles to their wide distribution, primarily related battery-based energy sources. This review concerns systematization knowledge in one areas vehicle control, namely, management issues when using braking controllers. process optimization is summarized from two aspects. F...

With speed increasing in high-speed trains, due to limitations of other types of brakes, aerodynamic brake has become an important braking method. In this task to make better use of brake’s panel different configurations are examined and the best panel shape which provides the reasonable drag coefficient is introduced. The results of simulations are carried out with the computational fluid dyna...

To mitigate the severity of rear-end and other collisions, Pre-Crash Systems (PCS) are being developed. These active safety systems utilize radar and/or video cameras to determine when a frontal crash, such as a front-to-back rear-end collisions, is imminent and can brake autonomously, even with no driver input. Of these PCS features, the effects of autonomous pre-crash braking are estimated. T...